Method of preparing silver halide grains of improved photographic and handling characteristics

ABSTRACT

A method is disclosed of forming silver halide grains capable of forming a surface latent image upon exposure to visible light. The grains are formed by incorporating from 10 -6  to 10 -10  mole of iridium per mole of silver before first ripening. The iridium is incorporated in the presence of a water soluble purine base or a water soluble salt thereof.



